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2011.Február 27.(V) 13:54 időpontban Magnus Granberg ezt írta: |
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> On Sunday 27 February 2011 10.11.58 Ryan Hill wrote: |
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>> On Sun, 27 Feb 2011 09:20:57 +0100 |
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>> |
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>> klondike <franxisco1988@×××××.com> wrote: |
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>> > 2011/2/27 Ed W <lists@××××××××××.com>: |
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>> > > On 26/02/2011 18:01, Magnus Granberg wrote: |
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>> > >> If you have read the last meeting we will be removing the pic use |
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>> flag |
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>> > >> as default on in the hardened amd64 profile. We will start with the |
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>> > >> changes when |
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>> > >> the new structure to the profiles have settled down. |
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>> > > |
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>> > > Hi, any chance of a bit of background on this change? ie the "why" |
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>> and |
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>> > > some of the implications? |
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> |
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> Most of the asm code is in libs and on amd64 it need to be PIC friendly |
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> from |
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> the start. We don't need to disable asm code. We do that most times with |
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> the |
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> pic use flag on hardened profile. |
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> |
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> /Magnus |
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|
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I'm still running Hardened on x86. I'm thinking of the optimal time to |
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switch to amd64. Is it better from the security point of view? |
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I assume, that it's easier to make amd64 asm code PIC-aware because of the |
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higher number of available registers. |
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|
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Dw. |
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-- |
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dr Tóth Attila, Radiológus, 06-20-825-8057 |
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Attila Toth MD, Radiologist, +36-20-825-8057 |
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|
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>> > |
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>> > Summing it up a lot, amd64 usually needs not special asm code for PIC |
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>> > due to the way the ABI is defined (which means being PIC by default |
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>> > usually). |
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>> |
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>> You summed it up too much. Why does this need to change? |
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> |
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